tuturututu tuturututu
tuturututu tuturututu .
t̪̻ u t̪̻ u r u t̪̻ u t̪̻ u WORD_BOUNDARY t̪̻ u t̪̻ u r u t̪̻ u t̪̻ u WORD_BOUNDARY
t u t u r u t u t u WORD_BOUNDARY t u t u r u t u t u WORD_BOUNDARY . WORD_BOUNDARY